Home > Tris(trimethylsilyl)phosphate (TMSP)

Tris(trimethylsilyl)phosphate (TMSP)

Online Inquiry

Tris(trimethylsilyl)phosphate

Synonyms: TMSP

CAS No.: 10497-05-9

EINECS No.: 234-028-1

Molecular Formula: C9H27O4PSi3

Molecular Weight: 314.5385

Structural Formula:

Standard

Items	Specifications
Appearance	Clorless clear liquid
Assay	≥99.5%
Chroma	≤20Hazen
Free acid (as HF)	≤20ppm
Hexamethyldisilazane	≤20ppm
Turbidity	≤20ppm
Cl-	≤5ppm
SO42-	≤10ppm
Fe	≤5ppm
Na	≤10ppm
K	≤5ppm

Properties: Tris(trimethylsilyl)phosphate is a colorless and transparent liquid. Density(25℃): 0.953g/cm3, Refractive index (25℃): 1.408, Boiling point: 228-229℃, Flash point: 24℃.

Uses: Tris(trimethylsilyl)phosphate (TMSPa) is an advanced functional additive for lithium-ion battery electrolytes. It effectively forms a dense, silicon–phosphorus-rich solid electrolyte interface (SEI) film on high-voltage (≥4.3V) cathode materials. This unique property enhances the electrochemical stability, cycle life, and low-temperature performance of lithium-ion batteries. It is widely applied in high-energy-density batteries, electric vehicles (EVs), and energy storage systems (ESS), providing improved safety and extended service life

Storage: This product should be stored in a sealed container protected by nitrogen and kept in a cool, well-ventilated and dry place. Keep away from heat sources and fire sources, and avoid exposure to light.

Packing: 200kg stainless steel drum with quick couplings and protected by nitrogen.Synonyms: TMSP

Previous Product：Lithium Difluorophosphate (LiDFP) Next Product：Lithium bis(oxalate)borate (LiBOB)